Indicating device



Oct. 18, 1932. J. w, BRYCE 1,882,763

INDICAIING DEVICE Filed Jan. 15. 1927 Patented Oct. 18, 1932 UNITEDSTATES PATENT OFFICE JAMES W. BRYCE, OF BLOOMFIELD, NEW JERSEY, ASSIGNORT INTERNATIONAL TIME RECORDING COMPANY OF NEW YORK, OF ENDIGOIT, NEWYORK, A CORPORATION GJ NEW YORK INDICATING DEVICE This invention relatesto docks and more particularly to docks of the non-pendulum type such asescapement spring docks and the like.

In the ordinary non-pendulum type of docks in order to ascertain whetherthe dock is functioning it is usually necessary for an observer to watchthe dock until he secs the hands move. This method utilizes time andalso is very tedious.

\ the non-pendulum type is functioning.

Another object is to provide an indicating pendulum for a non-pendulumtype of dock actuated by the dock mechanism. 9 Other objects andadvantages of my invent-ion will be obvious from the followingparticular description embodying the inven-' tion and of theaccompanying drawing in which Fig. 1 is a front elevational view of asecondary dock showing my pendulum device applied thereto and also theaperture through which the indicator on the pendulum may be viewed.

Fig. 2 is a rear elevational view of a secondary dock mechanism withparts omitted and disdosing means for operating the pendulum.

Fig. 3 is a fragmentary side devational view partly in section showingthe pendulum mechanism.

Fig. 4 is a perspective of the upper portion of the pendulum mechanismshown in Fig. 2 disclosing the means for hanging same on the dock.

Referring more particularly to the drawing, the operation of my penduiummechanism may be readily understood from Fig. 2 in which is disdosed asecondar movement. The motive power for actuating tiie secondarymovement comprises a magnet 1 coacting with an armature 2 pivoted at 20and he1d away from the cores of the magnet by spring 3. Eriergizationof. magnet 1 attracts the armaturc 2 which has afiixed thereto an arm 2aon which is pivotally mounted at 26 an actuating pawl 4. This pawlnormally rests in one of the notches at 4a of the ratchet wheel 5 and assoon as the armature 2 is attracted by the magnet 1 the pawl is carriedinto the next or adjacent notch. Upon deenergization of the magnet thearmature 2 returns to its normal position under the influence of itsspring 3, rotating the ratchet wheel 5 a distance of one notch. Aretaining pawl 6, biased by a spring 7 is provided to hold the ratchetwheel 5 in the position to which it has been turned by the aotuatingpawl 4. Associated with the ratchet wheel 5 is the usual dock mechanismincluding reduction gearing etc. for operating the hands of the dock.

Referring now also to Fig. 3 my indicating 3endulum mechanism isdisdosed as comprising a pendulum arm 8 to which is afiixed at its loWerend a pendulum weight forming a target or indicator 9 which may beviewed by an observer through an aperture 10 in the dial of the dock(sec Figs. 1 and 3) indicatingwhether the dock is running. Fixed at 11to the supporting plate 12 of the dock is a stud 13 which has knifeedges 14 and 14 respectively (ses Figs. 3 and 4) -upon which the arms 15and 15 of the pendulum arm 8 rest. An extension arm 16 fixed to thependulum arm 8 is provided with an adjusting counterbalance weight 17(sec Figs. 2, 3 and 4) This weight is simply provided for baiancing thetarget or indicator 9.

Fixed to the armature 2 by means of a screw 18 is an upwardly extendingrod 19 which is bent at its upper end so that the lateral projection 20lies at right angles to the pendulum 8 and Will, when the arm 19 isactuated strike the pendulum arm 8 at 21 causing the pendulum t0oscillate. The magnet 1 is energized often enough so that these impactswill keep the pendulum 8 continually oscillating as long as thesecondary dock is ronning.

In order that the' motion of the indicator or target 9 may be readilyvisible it may bear a color contrasting with the color of the dial orany other suitable arrangement may be employed for showing that thetarget is in metion.

My invention is capable of a wide variation and relationship of partswithout departure from the nature and principle thcreof, and I do notrestrict myself unessentially in the foregoing or other particulars, butcontemplate such alterations and modifications within the scope of theappended claims as may be found advisable.

I claim:

1. In a clock having a dial, indicating hands cooperating therewith, andmagnetic means for moving the hands; means for indicating that the dockis runnin said indi- L catmgg; means compms1ng an elementsubstantiallfree of effect on the indicating hands and means operated bysai d magnetic means for regularly, periodically actuating said clement.

2. In an instrument having an electrical source, a magnat for reccivingperiodic impulses from said elcctrical source, time indicating devicesoperatcd entirely under control of said magnet; means for indicatingthat the magnet is recciving said impulses, said means comprising apendulous element and mcans opcrated by the magnet for periodicailym0ving said element, said element being independent of the clectricalsource and ineffective to control the reception of impulses by themagnet.

3. In a time indicating mechanism, a dial and time indicating handscoopcrating therewith, magnetic mcans for advancing said indicatinghands, a" periodic timed impulse source external to said indicatingmcchanism, said magnetic means receiving timed period impulses frozmsaid source, au indicating device actuated by the advancing action ofsaid magnetic means, said indicator being mounted t0 swing freely underthe action of gravity during the quiescent period of the time indicatingmechanism.

4. In an electric dock, time indicating means, magnetically operatedmechanism for periodicaiiy advancing said time indicating means, asource of periodic electric impulsea, a driving magnet thereforenergizedby said periodic electric impulses, and an indicacing dcvice controlledby said magnet to operate during the pcriod 0f inactivity of saidmagnetically operated mechanism t0 indicate that the magnet is receivingsaid periodic impulses.

5. In an electric dock, a dial and time indicating hands associatcdtherewith, a magnetically opcrated mechanism for advancing the timeindicating hands, an osciliatin pendulous member periodically actuatedby the periodic operacion of the magnetically signature.

JAMES W. BRYCE.

